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Finding the Fourth Proportional to 11,419.54, 17,129.36 and 4,019.99

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Solution

The fourth proportional to 11,419.54, 17,129.36 and 4,019.99 is: 6,029.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.54 : 17,129.36 = 4,019.99 : x
  2. Step 2: Convert to fraction form
    11,419.54/17,129.36 = 4,019.99/x
  3. Step 3: Cross multiply
    11,419.54x = 17,129.36 × 4,019.99
  4. Step 4: Simplify right side
    11,419.54x = 68,859,750.16
  5. Step 5: Solve for x
    x = 68,859,750.16/11,419.54
  6. Step 6: Final answer
    x = 6,029.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.